Vacuum-receptacle cover.



No. 860,743. PATENTED JULY 23, 1907 W. HAAKER.

VACUUM REOEPTAOLE COVER.

Arm 1011121011 FILED MAY 15,1906- UNIT D STATES PATENT OFFICE.

' WILLIAM HAAKER, VERQNA, NEW JERSEY.

vAoUUM-nEonPTAoLn COVER.

Specification 3f Letters Patent.

' ,dfatented July as, 1907.

Application filed May 15, 1906. Serial N- 316,959.

To all whom 'it may concern: I

Be it known that I, WILLIAM HAAKER, a citizen of the United States, residing at Verona, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Vacuum-Receptacle Covers, of which the following is a specification,

reference being had therein to the accompanying drawit may be readily punctured in order to admit air into the receptacle and thereby release the cover.

A further object of the invention is to provide such a cover which may be used in coriilection with an ordinary drinking glass or tumbler.

A further object ofth'e invention is to provide such a cover with a push-button-like device carrying a puncturing pin by which the cover may be perforated to admit air into the receptacle; and to so form the cover that thepush-device will be so protected that it will be practically impossible to accidentally force it inward. The push-device is sd located in the cover that the receptacle may be packed, one upon another, without the least danger of forcing the puncturing pin through the cover.

' obtain an absolutely air-tight joint between the elastic material and the walls of the channel which receives it, and at the same time securely fasten the elastic ring within the channel. It is manifest that where a separate packing-ring of rubber, or similarmaterial, is placed in this channel that it is difficult to secure an air tight connection between the rubber ring and the walls of the channel, thereby requiring an unnecessarily heavy pressure on the cover to maintain the air tight connection with the receptacle. i

As shown in Fig. 1,-'I provide the cover with a central depression or well 4, the bottom of which is slightly above the lower edge of the annular flange 5 around the edge of the cover, said flange 5 forming one wall of the channel 2. In this well is placed an inverted cup-like push-device 6, the lower edge of said device resting on the bottom of the well or depression. The upper edge of the side wall of thewell is turned over on the top of the push-device 6 and serves to retain said device within the well. The top of the push-device bulges slightly upward, as shown clearly in Fig. 1, but its upper surface does not project above the upper edge of the side wall of the well or depression, so that said wall formsan annular protecting wall for said pushdevice. To the under side of the upper wall of the push device is secured a downward extending puncturing pin 7, said puncturing pin terminating slightly above the bottom of the well.

When it is desired to release the cover from the receptacle the upper wall of the push-device is forced downward preferably by pressing the thumb thereon, and

the puncturing pin driven through the bottom wall of i the well. Thispermits air to pass into the receptacle and thereby releases the cover.

It will, of course, be understood, that the joint between the upper edge of the side wall of the well and the upper 'edge of the push device is not air-tight, so that air may pa'ss down through said joint and into the recepta cle through the aperture made therein by the puncturing-pin.

It is, of course, manifest that the push-device or puncturing-pin maybe secured to the cover in a great variety of ways. In Fig. 2 the puncturing pin 7 is secured to a push-plated, this plate 6 being located in a central depression or well 5" formed in the cover. It will be noted that in this construction the push-device is below the upper surface of the main'part of the cover so that it will not be accidentally depressed. The plate 6 is secured in place by a drop of solder on the tongue 6 By locating the puncturing device in a depression in the cover, and protecting it, substantially as described,

the receptacles may be placed one upon another in a. packing case without any danger of the pins being forced through the covers. It will also be noted that the push-; devices'are so protected that they will not be accidentally broken from the covers. This is particularly so in ally force the puncturing pin through the cover. By

providing a cover of this construction it will be extremely simple to detach the cover of a vacuum jar, at the same time avoiding the necessity of procuring a sharp pointed instrument and a hammer, as is now necessary, in order to remove cover.

the ordinary vacuum jar Having thus described my invention, what 1 claim as 4 new and desire to secure by Letters Patent, is:-

1. A cover for n vaouum receptacle formed with a depression of well-in its upper side, a push-device located in said depression, the upper edge of the wall of said depresslon being turned over to retain the push-device in plaice and to serveasa protection therefor, and a puncturing pin carried by the puslpdevice and adapted to he forced. through the bottoni oi the depression, y

2'. A cover for a vacuum receptacle provided with an annular channel or groove in' its under sidenear its edge containing elastic packing material and adaptcdto receive the edge of alrccepta cle, the main body of the cover being depressed below the upper wall of said channel or groove, whereby said wall will protect the main body of the cover, said main body being formed with a depressed well; and o. push device located in said well and carrying a-puncturing pin, the upper wall of said'well extending above the push device but below the upper edge of the wall of; the channel or groove. whereby the push deviaze will be protected by the-wall and accidental puncturing of the cover will be prevented. I I i 3. A vacuum vreceptacle cover formed with an annular groove on its under side near its edge adapted to contain elastic sealing material andtoreceive the edge of a recep tacle. the main body of the cover being depressed below the upper wall of said groove and. formed with a depressed well, a push device located in said well and below the upper wall thereof, and a puncturing pin carrier by said pu'shdevice, whereby the upper wall of the nnnular groove will protect the body'ofthe cover. and the upper edge of the wall or the well will protect the push device and prevent accidental puncturing of the cover.

r In testimony whereof I hereunto afllx my signature in the presence of'two witnesses this 14th day ot'May 1906.

WILLIAM HAAKER.

- Witnesses l WM. It. DAVIS,

E. KAUFMANN.' 

